NEW YORK – The Department of Homeland Security under President Obama is demonstrating troubling signs the agency is shifting the balance of power away from local and state municipalities toward a centralized federal authority, charges a recently released book.

In “Impeachable Offenses: The Case to Remove Barack Obama from Office,” New York Times bestselling authors Aaron Klein and Brenda J. Elliott document the DHS has likely violated the Posse Comitatus Act.

The law expressly forbids direct participation by the military in a “search, seizure, arrest, or other similar activity.”

The authors further cite evidence the DHS is building a de facto domestic military, with the purchase of military-grade equipment and the execution of military-style training exercises.